X = int(input())

def define_rate(X):
    if X >= 1800:
        return 1
    elif X >= 1600:
        return 2
    elif X >= 1400:
        return 3
    elif X >= 1200:
        return 4
    elif X >= 1000:
        return 5
    elif X >= 800:
        return 6
    elif X >= 600:
        return 7
    elif X >= 400:
        return 8

print(define_rate(X)) X = int(input()) X int(input()) int input() input def define_rate(X):
    if X >= 1800:
        return 1
    elif X >= 1600:
        return 2
    elif X >= 1400:
        return 3
    elif X >= 1200:
        return 4
    elif X >= 1000:
        return 5
    elif X >= 800:
        return 6
    elif X >= 600:
        return 7
    elif X >= 400:
        return 8 define_rate if X >= 1800:
        return 1
    elif X >= 1600:
        return 2
    elif X >= 1400:
        return 3
    elif X >= 1200:
        return 4
    elif X >= 1000:
        return 5
    elif X >= 800:
        return 6
    elif X >= 600:
        return 7
    elif X >= 400:
        return 8 X >= 1800 X 1800 return 1 1 elif X >= 1600:
        return 2
     X >= 1600 X 1600 return 2 2 elif X >= 1400:
        return 3
     X >= 1400 X 1400 return 3 3 elif X >= 1200:
        return 4
     X >= 1200 X 1200 return 4 4 elif X >= 1000:
        return 5
     X >= 1000 X 1000 return 5 5 elif X >= 800:
        return 6
     X >= 800 X 800 return 6 6 elif X >= 600:
        return 7
     X >= 600 X 600 return 7 7 elif X >= 400:
        return 8 X >= 400 X 400 return 8 8 X X print(define_rate(X)) print define_rate(X) define_rate X X = int(input()) int(input()) X def define_rate(X):
    if X >= 1800:
        return 1
    elif X >= 1600:
        return 2
    elif X >= 1400:
        return 3
    elif X >= 1200:
        return 4
    elif X >= 1000:
        return 5
    elif X >= 800:
        return 6
    elif X >= 600:
        return 7
    elif X >= 400:
        return 8 def define_rate(X):
    if X >= 1800:
        return 1
    elif X >= 1600:
        return 2
    elif X >= 1400:
        return 3
    elif X >= 1200:
        return 4
    elif X >= 1000:
        return 5
    elif X >= 800:
        return 6
    elif X >= 600:
        return 7
    elif X >= 400:
        return 8 define_rate
X = int(input())

def define_rate(X):
    if X >= 1800:
        return 1
    elif X >= 1600:
        return 2
    elif X >= 1400:
        return 3
    elif X >= 1200:
        return 4
    elif X >= 1000:
        return 5
    elif X >= 800:
        return 6
    elif X >= 600:
        return 7
    elif X >= 400:
        return 8

print(define_rate(X))